Carbureter.



G. E. GRAY.

CARBURETER.

APPucATloN FILED MAR. l. 1917.

Patented A110". 6, 1918-.'

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GEORGE E. GRAY, 0F COMPTON, CALIFORNIA, ASSIGNOR OF ONE-THIRD TO EDWARDVA.

CARSON, OF LOS ANGELES, CALIFORNIA.

CARBURETER.

Specication of Letters Patent. l

Patented Aug. e, 1ers;

Application filed March 1, 1917, Serial 1\To.'151,'797.

To 'all whom it may concern: f

Be it known that I, GEORGE E. GRAY, a citizen of the United States, residing at Compton, in the countyof Los Angeles and State of California, have invented new vand useful Improvements in Carbureters, of which the following is a specification.

This invention relatesto a carbureter and particularly pertains to an automatic valve therefor.

It is an obj ect of thisinvention to provide a carbureter with an air valve which will act automatically. to control the yinflow of air to the lcarbureter prior to its carburizationA with the liquid fuel. l

a Another obj ect of this invention is to provide a valve which will `automatically regulate' the richness of the gaseous fuel produced within` the carbureter and vregulate it in direct relation to the fuel requirements,

of the engine for which the new carbureter 'is provided.l t

' Another obj ect .of this invention is toprovide 1a manually operated throttle valve adapted to accurately regulate the volume of'gaseous fuel passing to the engine.- *Y

Another.f obj ect of this invention is to provvide mechanical'means for mixing the gaseous fuel as it Apasses to the engine and thereby insuring that it will be thoroughly carbureted.

Y It is a further object of thisl invention to provide a 'carbureter possessing the above named features which is formed of few operative parts-and which is. simple in construction andoperation. Other objects will appearA hereinafter. The inventionv isy illustrated, by way yof example, in the accompanying drawings, in which:` 1.

- Figure'l isa viewiinl side elevation illustrating the carbureter and particularly disclosing the carbureter chamber with parts broken away -to more clearly set forth its construction. f

Fig. 2 is a view in side elevation illustrating the assembled carbureter .and disclosing: the'disposition of the manually op-` erated throttle valve inrelation to the carbureter chamber.. andY the .automatically operating valve. 1 .A

`Fig.V 3is a .,view in side elevation illustrating fthe manually operated throttle valve asillustrated from itsv operative position upon the .carbureteiz t Fig. e is a View in end elevation illustrating the mixer by which the gaseous fuel is agitated as it leaves the carbureter andenters the manifold of the engine. y f

Referring more particularly. to the d pawings, 10 indicates a carbureter having a float chamber lllitted with a suitable float. and fuel valve control means to regulate theflow of' liquid fuel into thecarbureter from .a fuel supply pipe 12,. Leading from the oat chamber is a fuel duct 13 which is regulated by a needle valve-111 and which communi- Cates with a series of nozzles 15.4` These nozzles extend through an airfinlet passageway 16 and terminate uponl the outer side of a partition wall n17. lThisywall divides the airiinlet passage-way from a carbureter chamber passage-way 18. YThe nozzies are upturnedl within this ,chamberfand are adapted to permit air' passing by them to absorb the liquid fuel passing from the float bowl. An lopening 19 is' formed above 'each of the nozzles and communicates kwithrthe air passage-way V16, thereby allowing the liquid and air to pass through an opening 20 in the bottom of the lair chamberfand against the manually operated valve 21. Aty tention is directed to the fact that itis desirable to use a series of the'fuel nozzles and to dispose tliem in horizontal relation to each other. In this position they are separated by partition walls 22 extending up to the valve 21,thus insuring that the liquid fuel will be thoroughly ,distributed throughout thev volume yof air passing threugh thecarbureter chamber 18 to the The valve 21 s cylindrical in shape and is disposed in a Ahorizontal position 'within a case 23 formed integral with thecarbureter and air inlet passage-ways; Anopening-24l is formed throughout the length of this valve. This opening is triangular inshape having its hypotenuse .extending .the length of the Vvalve wall and parallel to the` valve axis and havingy its base disposedatrightangles to said-axis.

In this manner the throat of the, air inlet passage-way 1G may be' gradually openedto'permit one or more of the 'nozzle chambers '22V to" communicate Y the operator.

10.5 withthe linterior-lof the valve and the en- 25 suitablyV connected-with: operating i As a means for automatically controlling the volume of air passing to the valve 2l and the richness of' fuel mixture generated within the carburetor chamber 18, a wing valve 26 is provided. This valve is pivotally mounted for vertical movement upon a pin 27 formed on the center line of the partition wall 17 and disposed adjacent the lower end or mouth 28 of the air passageway 16 and the carbureter chamber 18. The valve is formed with two wings, a long wing 29 which corresponds in width to the width of the air passage-way 16 and a short wing 30 corresponding in width to the width of the carbureter passage-way 18. These wings are disposed at an angle to each other, the angle having been determinedby the experiment and in consideration of the fuel capacity of the engine. The wing 29 is heavier and longer and overloalances the wing 30, so that the carbureter chamber 18 leading past the discharge ends of the fuel nozzles is normally open, and the wing 29 presents a larger surface to the lifting force of the sucked air and by this force overbalances the wing 30 the. other way, tending to close the carbureter passage and open the air passage, thereby increasing the resistance through the carbureter chamber and reducing the resistance in the passage-way 16.

In order to insure that the gaseous fuel produced within the carbureter is thoroughlymixed, an agitator 31 is mounted in the mouth of the valve-casing 23 which incloses the manually operated valve. This memberlis provided with a series of inclined vanes 33 which impart a gyrational movement to the fuel mixture and act to thoroughly break up the atoms of liquid fuel and cause it to be properly mixed with the air. A

In operation, the engine upon which the carbureter is mounted is started by any desired means and will immediately create a suction through the mouth 28 of the carbureter. This will cause the valve 26 to be lifted and its wings 29 and 30 to substantially stand in a counter-poised position.

Air will pass upwardly through the air inlet passage-way 16 and the carbureting chamber 18. The air passing through-the carbureting chamber will gather liquid fuel as it rushes by the fuel nozzles 15 and will again unite with the air passing along tho passage-way 16. As it passes through the opening 20 its flow will be controlled by the movement of the valve member 21 which is rotated to open and close a given number of the compartments 22 lAs the engine accelerates, the wing 29 of the valve member 26 will gradually rise and cutoff the passage-way vthrough the carbureting chamber. This, it will be seen,"produces a lean mixture. When the Vengine labors under a heavy load, the suction will be decreased and the valve wing 29 will fall as the wing 30 is raised, thereby increasing the richness of the fuel mixture when the throttle position is unchanged. It will be understood that even when the air intake passage to the oarbureter chamber is entirely closed a certain amount of volatilization of the fuel will take place due to the partial vacuum within said chamber. Especial attention is called to the throttle valve 21, the mixture passage 18, and the air passage 16 leading to the throttle valve andrhaving vertical intakes 28, the nozzles 15 leading fuel into the mixture passage, and the air valve 26 freely mounted and having a short wing 30 extending into the mixture passage intake and a long wingY 29 extending into the air passagel intake, said wings being set so that when the air passage wing 29 is closed the mixture passage Wing 30 is open, the air passage wing being of larger area and heavier than the mixture passagel wing, so that the mixture-passage wing is normally openv and is closed more or less as the suction against the air passage wing varies.

It will thus be seen that the carbureter here disclosed provides simple manually' operating means lfor absolutely controlling the volume of gaseous fuel flowing to the engine cylinders and automaticmeans for regulating the richness of the fuel in rela-v tion to the engine requirements. A

While I have shown the preferred construction of my carbureter as now known to me, it will 'be understood that various 100 changes in the combination, construction and arrangement of parts may be made by those skilled in the art without departing from the spirit Vo f my invention.

I claim: n

l. In a carbureter, a throttle valve, means forming a mixturev passage and an air passage side by side leading to the throttle valve and having vertical intakes, means for leading fuel into the mixture passage, 110 and an air valve freelyV mounted with a wing extending into the mixture passage intake and a wing extending into the air passage intake, said wings being set so that when the air passage wing is closed the mix- 115 ture passage wing is open, the air passage wing being of larger area and heavier than the mixture passage wing; so that the mixture passage wing is normally' open and is closed more or less by suction against the 1'20 air passage wing.

2. A carbureter comprising fuel supply means, a series of horizontally disposed ducts leading from said supply means,

means forming a mixture passage having-an '125 v passage having vertical intakes side by side, than the mixture passage Wing; so that the and an air valve freely mounted With a mixture passage Wing is normally open and 10 wing extending into the mixture passage is closed more or less by suction against the intake and a Wing extending into the air air passage Wing. I Y passage intake, said Wings being set so that In testimony whereof I have signed my When the air passage Wing is closed the name to this specification.

mixture passage Wing is open, the air passage Wing being of larger area and heavier GEORGE E. GRAY.

Copies of this patent may be obtained for five cents each, by addressing lthe Commissioner of :Patents` Washington, D. C. 

